Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Ownership of United States Government Marketable Securities, by Maturity," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1970," Federal Reserve Bulletin (September 1970) : 122-122. https://fraser.stlouisfed.org/title/62/item/21429/toc/165041 , accessed on March 28, 2024.